/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/Accessibility/GenericAccessibleInterfaces.h
Returns an array of all accessible users that are currently registered with the accessible registry.
[TArray](API\Runtime\Core\Containers\TArray)< [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FGenericAccessibleUser](API\Runtime\ApplicationCore\GenericPlatform\Accessibility\FGenericAccessibleUser) > > GetAllUsers() const